The BB+ physics changes are irritating, but only if you're really used to the arcade version. After a few hours of play I honestly stopped caring. (I'd still buy the arcade version in a heartbeat, though.)

Shameless self-plug: looks like I'm the first in NA to clear the classic stages in ranked mode. It looks like only 15 people have done so worldwide (and subsequently updated their scores on the leaderboards)...that (probably) says bad things about the game's popularity.